Show team and repo badges on README

This patch adds the team's and repository's badges to the README file.
The motivation behind this is to communicate the project status and
features at first glance.

For more information about this effort, please read this email thread:

http://lists.openstack.org/pipermail/openstack-dev/2016-October/105562.html

To see an example of how this would look like check:

https://gist.github.com/b327529b5b5b46765eadb59e28f3fcb1

Change-Id: I17261bee07a88999e83c09bd736dd4842182a3ca

Author: flaper87

README.md

@@ -1,3 +1,10 @@
+Team and repository tags
+========================
+
+[![Team and repository tags](http://governance.openstack.org/badges/puppet-swift.svg)](http://governance.openstack.org/reference/tags/index.html)
+
+<!-- Change things from this point on -->
+
 swift
 =======